Where the pictures go

Where do the pictures go after the scan?

Into the department's records, as part of the file the examination leaves behind. The images are digital objects now: the era of the film packet and the light box has given way to studies stored and read on screens. The legal skeleton of that storage is in the Ionising Radiation (Medical Exposure) Regulations 2017, whose Schedule 2 requires the employer to keep procedures "for the carrying out and recording of an evaluation for each exposure including, where appropriate, factors relevant to patient dose" and "for the assessment of patient dose and administered activity". The image is the evidence; the record is what the law requires to be kept of it.

Storage as a subject has its own guides elsewhere. Headroom, a practical site about free disk space on the Mac, treats storage as something to be measured, audited and deliberately kept clear, and its readers will recognise the same discipline in a clinical archive: what is kept, where it lives, and who may remove it. The hospital's version of that housekeeping is simply older and more heavily regulated.

What do the regulations say about records?

That they exist and that they are written down. Schedule 2 of IR(ME)R 2017 requires employer procedures covering identification of the individual exposed, the entitlement of referrers, practitioners and operators, pregnancy and breastfeeding enquiries, prior information about benefits and risks, and the recorded evaluation of each exposure. The record is part of the exposure's legality, not an administrative extra: an exposure without its documentation is an exposure whose justification cannot be checked later.

The audit trail sits on top. Regulation 7 makes clinical audit an employer duty, defined in regulation 2 as "a systematic examination or review of medical radiological procedures which seeks to improve the quality and outcome of patient care", and regulation 6 requires quality assurance programmes alongside the procedures themselves. The stored record is what audit reads: without it there would be nothing to review against the agreed standards.

How does the result reach the requester?

By the report, not by the pictures. The NHS describes the outward journey for each method: ultrasound conclusions go to the doctor who requested the examination, with results sometimes immediate and sometimes after "a few weeks"; CT results take "usually between 1 and 2 weeks" but can take "up to 4 weeks"; MRI takes "between 1 and 2 weeks"; a PET report is reviewed by a radiologist and takes "usually 1 or 2 weeks"; X-ray results are sometimes available "on the same day". The images stay in the archive; the interpretation is what travels.

The Royal College of Radiologists describes the person whose writing travels: clinical radiologists are "specialist doctors trained to read and interpret medical images, using a wide range of imaging techniques including X-ray, ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET) and molecular imaging". What the requester receives is that interpretation, attached to the study it describes.

Why the archive is part of the examination

Because the framework is built on being able to look back. Justification under regulation 11 assumes earlier examinations can be found and weighed; the CQC's enforcement in England, reviewing "statutory notifications from healthcare services about significant accidental or unintended exposures", assumes incidents can be reconstructed from the record. The Care Quality Commission's 2020/21 report counts those notifications: 85 concerning patients sent for the wrong examination, 33 where the operator did not correctly identify the patient. Every one of those findings was possible because the trail existed to be checked. The paper trail page covers the document side of the same record.