Running a radiology service

Radiology report turnaround time: what is normal, what is safe, and how it is measured

Radiology report turnaround time is measured from the moment a study is complete on the scanner to the moment a final signed report is available. There is no Indian statutory benchmark; each provider quotes its own targets, and the numbers in their marketing are not comparable unless you know where each clock starts and stops.

By Raman Sandhu, Co-founder, RaydiacPublished 11 September 202610 min read

How turnaround time is defined and measured

Turnaround time (TAT) is the interval from study completion to final signed report. That sounds simple, but a study passes through six states on its way, and every provider chooses which two to measure between. The states are:

Acquired. The technologist finishes the scan and closes the study on the console.
Available. The complete study, every series, has arrived at the reporting service. On a slow link this can be many minutes after acquisition.
Assigned. The study has been offered or allocated to a specific radiologist.
Accepted. The radiologist has opened it and taken responsibility for it.
Preliminary. A preliminary result has been issued, where the workflow uses one.
Final. The final report is signed and delivered.

Delays hide in the gaps. Between acquired and available: incomplete transfers, a gateway waiting for the last series, a study sent without a clinical history that has to be chased. Between available and assigned: nobody credentialed for that modality is on shift, or the worklist is a pool nobody picks from. Between assigned and accepted: the offered radiologist is busy and there is no backup route. Between accepted and final: the read itself, which is the only part most people picture. A provider that starts its clock at “accepted” and stops it at “preliminary” will look twice as fast as one that measures from “available” to “final” on identical work.

Ask for the definition, not the number. A turnaround figure means nothing until the provider states the start state, the stop state, whether the figure is a mean, a median or a percentile, and whether nights and weekends are included.

What providers in India quote

The figures below are what four Indian providers and one state scheme publish. They are marketing and tender figures, not audited results, and each uses its own measurement points.

Provider or scheme	Published turnaround	Notes
5C Network	Around 30 minutes routine; 15 minutes STAT¹	Quoted as averages across modalities; STAT carries a published surcharge of 20 to 40 percent¹⁰.
DeepTek	45 minutes X-ray, 90 minutes CT, 120 minutes MRI²	Stated as inclusive of quality assurance, which is unusual and worth asking others about.
Krsnaa Diagnostics	STAT 30 to 60 minutes; CT 2 to 4 hours; MRI 4 to 8 hours³	Employed hub model, largely public-private partnership contracts.
NHM Assam free diagnostic scheme	Within 6 hours by day; by 10 AM for night studies⁴	A government service level written into a scheme, for X-ray under a PPP contract.

The spread, from 30 minutes to 8 hours for comparable modalities, is the point. These are not measurements of the same thing. A hospital comparing providers should ask each to restate its figure against the six states above. The guide to teleradiology companies in India compares the providers on the other dimensions.

What the ACR says

The American College of Radiology’s White Paper on Teleradiology Practice is the most-cited professional statement on the subject. Its position on turnaround is that the expectation for a teleradiology read should be “not more or less stringent” than for on-site radiology: remote reporting is not a licence to be slower, nor a reason to demand speed that an on-site department would not be held to⁵. The same paper insists that the remote radiologist have access to prior studies and clinical context, describes reads without them as lower value, and expects the service to run a discrepancy process, peer review, addenda and an audit-trailed critical-result acknowledgement⁵. Speed without these is not a service level; it is a queue.

Priorities and why they are set at intake

Three priorities are standard. Routine is the default for outpatient and ward studies where the result is needed within the working day or the next. Urgent is for inpatients or outpatients whose management is waiting on the result within hours. STAT is for the emergency department and intensive care, where the result is needed immediately.

Priority belongs to the order, not the reader. It should be set at intake by the site, from the referrer’s request and the site’s own rules, and it should only ever move upwards: a radiologist who discovers something serious in a routine study can raise it, but nobody should be able to lower a STAT to routine because the queue is long. Large platforms enforce this algorithmically, with STAT assignment mandatory rather than self-selected⁷⁸. The alternative, a pool where radiologists choose what to read, rewards picking the easy studies and leaves the difficult STAT at the bottom.

Critical results communication

Turnaround measures when the report was signed. It says nothing about whether anyone who could act on it knew. A critical finding, such as an intracranial haemorrhage or a pulmonary embolism, needs a closed loop: direct communication with a responsible clinician, and a record of it.

Element	What the record should show
Who	The named person reached at the site, and their role; and the radiologist who made the call.
When	Time of the finding, time of the first attempt, time of acknowledgement.
Channel	Telephone, WhatsApp, SMS, in-platform message; and which of them succeeded.
Acknowledgement	Explicit confirmation from the recipient that the finding was understood, not a delivery receipt.
Escalation	What happens if nobody answers: a second contact, the site coordinator, the medical superintendent, and after how long.

The ACR communication parameter expects such non-routine communication to be documented, and the teleradiology white paper expects the acknowledgement to be audit-trailed⁶⁵. Hospital systems in other countries have built multi-pathway acknowledgement into the electronic record, including mobile phone integration⁹; in an Indian tier-2 hospital at 2 AM the pathway that works is usually a phone call to a named coordinator, and the contract should name that person.

Service-level targets versus guarantees

A service-level target is a commitment to report a defined proportion of studies within a defined time, measured between defined states, with a remedy if missed. A guarantee is a promise that every study will be reported within a time. In a service that depends on human radiologists, a study that arrives incomplete, a link that drops, and a run of STATs in the same hour all exist, so a guarantee without exceptions is either a slogan or is quietly priced to fail. “Guaranteed 15 minutes” with no stated bench of radiologists on shift, no percentile and no credit is a red flag, not a feature.

The honest form is a target per priority, per site, with a percentile (for example, the proportion of STAT studies reported within the target), monthly reporting, and service credits against the invoice for studies that miss. Credits make the target real, because they cost the provider something. Escalation rights after a sustained miss make it enforceable.

How to write turnaround into a contract

Clause	What to specify
Definitions	Start state (study complete and received) and stop state (final signed report delivered). Whether preliminary reports count. Time zone and clock source.
Targets by priority	Separate targets for routine, urgent and STAT, and by modality where they differ. Stated as a time and a percentile, not a single mean.
Shifts and coverage	Which hours are covered, whether night and weekend targets differ, and the minimum number of credentialed radiologists on the roster for the site’s modalities.
Exclusions	Studies received incomplete, without a clinical history, or during a documented outage on the hospital side. Keep the list short and require the provider to notify the site at the time.
Priority rules	Who sets priority, that it is set at intake, and that it can be raised but not lowered.
Critical results	The site’s named contacts by shift, the channels in order, the acknowledgement required, the escalation path and its timing.
Reporting	Monthly statement of volumes, turnaround per priority and modality, misses, critical-result log and discrepancy rate.
Remedies	Service credits per late study or per percentage point of miss; escalation meeting after a defined number of months below target; termination right after a sustained breach.
Term	Monthly with notice is achievable; a 12 to 24 month lock-in in exchange for a turnaround promise should be questioned.

Turnaround belongs alongside the quality clauses, not instead of them; the guide to peer review and discrepancy rates sets out what those should say.

How Raydiac handles it

Raydiac does not publish a single turnaround number, because a number without a measurement definition and a roster behind it is not a commitment. Instead, each site agreement sets a service-level target per priority, routine, urgent and STAT, for CT and MRI. The timer starts when the complete study is received and every order shows a visible countdown against its target on the worklist. Priority is set by the site at intake and can only be raised. STAT orders go to the top of every eligible credentialed radiologist’s list, with a backup route if the first offer is not accepted in time. Compliance is reported to the site monthly, and service credits apply when Raydiac misses its target.

Critical findings open a closed-loop task that records who was called, on which channel, when they acknowledged, and what escalation followed, and the outcome is written into the report. Turnaround is measured alongside random-sample peer review and discrepancy rates, not in place of them. How this works for a hospital is described on the page for hospitals and diagnostic centres, and the roster model for overnight cover is on the night and emergency reporting page.

Questions people ask

What is a normal turnaround time for a CT report in India?

There is no statutory or professional-body benchmark in India. Published provider targets range from about 30 minutes for routine work at one large network to 2 to 4 hours for CT and 4 to 8 hours for MRI at another, with STAT reads quoted at 15 to 60 minutes. A government scheme in Assam specifies 6 hours by day and by 10 AM for night studies. Raydiac does not publish a single number; each site’s agreement sets a service-level target per priority, shown as a countdown on the worklist, with service credits if it is missed.

When does the turnaround clock start?

It should start when the complete study is available to the reporting service, not when the first image arrives and not when a radiologist opens it. Some providers start the clock at acceptance by a radiologist, which hides queueing time. Ask a provider to define the start and stop points in writing. Raydiac starts the service-level timer when the study is complete and received, and stops it at the final signed report.

What does STAT mean in radiology?

STAT indicates an examination whose result is needed immediately because the patient’s management depends on it, typically in the emergency department or intensive care. It is a property of the order, set by the referring clinician or the site, not chosen by the radiologist. Raydiac routes STAT orders to the top of every eligible radiologist’s list with a backup route if the first offer is not accepted in time, and a STAT priority can never be lowered once set.

Is a faster report always better?

No. A report is only useful if it is correct and if it was read with the prior studies and clinical history. The ACR’s teleradiology white paper says turnaround for remote reads should be neither more nor less stringent than for on-site reads, and that reads without priors or context are of lower value. Raydiac requires a clinical history and question at intake and fetches priors from the same site before the study is offered, and measures quality by peer review and discrepancy rates alongside turnaround.

What is a critical result, and how quickly must it be communicated?

A critical result is a finding that could cause serious harm if the referrer does not act on it promptly, such as an intracranial haemorrhage or a tension pneumothorax. The expectation is direct communication with a responsible clinician, not just a report in the system, with a record of who was reached, how and when, and their acknowledgement. Raydiac opens a closed-loop task for every critical finding that tracks the call, the channel, the acknowledgement and escalation if nobody answers.

What happens if a provider misses its turnaround target?

It depends on the contract. A good agreement states the target per priority, the measurement points, the reporting the provider must give you each month, and a remedy, usually a service credit against the invoice for studies reported late, with escalation rights if a pattern persists. A “guarantee” with no remedy and no measurement is a slogan. Raydiac writes a service-level target per priority into each site agreement, reports compliance monthly and applies service credits when it misses.

Sources

This guide is general information for hospitals, diagnostic centres and radiologists in India. It is not legal, tax or medical advice. Regulations change; check the primary source before acting, and see the medical disclaimer.