mrrc-hdr-qa documentation

Code to parse dicoms into a template database and alert on non-conforming sequences.

Code

dcmmeta2tsv	Give a tab separated metadata value line per dicom file.
acq2sqlite	Convert db.txt into a sqlite database.
change_header	Modify DICOM header information to simulate failing QA.

Overview

Template

See acq2sqlite.DBQuery.CONSTS

Here’s an example for the RewardedAnti task acquisitions in the WPC-8620 project. The ideal template is found finding the most frequent set of repeated key parameters. 150 of the RewardedAnti seqeuences share the same acq_param set, here stored in the sqlite db on rowid=35. But 4 acquisitions (rows in acq) don’t match. In this case all mismatches can be found in TA.

Parameters

Dicom tag list

name	tag	desc
AcqTime	00080032	Acquisition Time like 145446.685000
AcqDate	00080022	like 20241004
SeriesNumber	00200011	REL Series Number
SubID	00100010	patient name
Comments	00204000	REL Image Comments//Unaliased MB3/PE4/LB SENSE1
Operator	00081070
Project	00081030	ID Study Description//Brain^wpc-8620
SequenceName	0008103e	series description
SequenceType	00180024	ACQ Sequence Name
PED_major	00181312	ACQ Phase Encoding Direction ROW or COL
TR	00180080
TE	00180081
Matrix	00181310	ACQ Acquisition Matrix
PixelResol	00280030	IMG Pixel Spacing//2.29787230491642.2978723049164
BWP	00180095	ACQ Pixel Bandwidth (?) also unimplemented? need CSA value?
BWPPE	00191028	in matlab S.BandwidthPerPixelPhaseEncode;
FA	00181314
TA	0051100a
FoV	0051100c	eg FoV 1617*1727; but actually cocaluated from matrix and spacing?