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PDQ is a set of MATLAB functions for detecting sphere-shaped deposits of magnetically susceptible material (i.e., magnetic dipoles) in MRI datasets, measuring their magnetic moment. Deposits of interest include SPIO-labeled cells and magnetocapsules.

Unpublished results suggest that PDQ is effective at distinguishing contrast due to dipoles from other intrinsic sources of hypointensity.

Publications that describe PDQ's function and exhibit results include:

1) Sensitive and automated detection of iron-oxide-labeled cells using phase image cross-correlation analysis. (http://tinyurl.com/d3lcdoq)

2) Automated detection and characterization of SPIO-labeled cells and capsules using magnetic field perturbations (http://tinyurl.com/bvomtde)

PDQ was developed in Ahrens Lab, Pittsburgh NMR Center for Biomedical Research, Carnegie Mellon University. Financial support was provided in part by the U.S. National Institutes of Health.

You can download file releases of MRI-PDQ:Phase Detection & Quantification project from List of release files

DL	PDQ-8-27-2012.zip Date: 2012-08-27, Size: 3531905

DL	PDQ-8-27-2012.zip Date: 2012-08-27, Size: 3531905

DL	PDQ-8-27-2012.zip Date: 2012-08-27, Size: 3531905

List of release files

File/Folder Name	File Type	Size	Date	Download Count
Latest 5 files
PDQ.m	text/plain; charset=us-ascii	12.6 KB	2012-12-07 00:05	1
PDQ_calc_volume.m	text/plain; charset=us-ascii	0.5 KB	2012-12-07 00:05	0
PDQ_calculate_neighbors.m	text/plain; charset=us-ascii	2.8 KB	2012-12-07 00:05	0
PDQ_calculate_radii_and_chi.m	text/x-c++; charset=us-ascii	5.0 KB	2012-12-07 00:05	0
PDQ_dipole_analysis.m	text/x-c++; charset=us-ascii	5.6 KB	2012-12-07 00:05	0
All Files
PDQ-6-1-11
PDQ.m	text/plain; charset=us-ascii	12.6 KB	2012-12-07 00:05	1
PDQ_calc_volume.m	text/plain; charset=us-ascii	0.5 KB	2012-12-07 00:05	0
PDQ_calculate_neighbors.m	text/plain; charset=us-ascii	2.8 KB	2012-12-07 00:05	0
PDQ_calculate_radii_and_chi.m	text/x-c++; charset=us-ascii	5.0 KB	2012-12-07 00:05	0
PDQ_dipole_analysis.m	text/x-c++; charset=us-ascii	5.6 KB	2012-12-07 00:05	0
PDQ_generate_optimal_template.m	text/x-c++; charset=us-ascii	4.8 KB	2012-12-07 00:05	0
PDQ_generate_template.m	text/x-c++; charset=us-ascii	11.2 KB	2012-12-07 00:05	0
PDQ_generate_template_old.m	text/x-c++; charset=us-ascii	12.3 KB	2012-12-07 00:05	0
PDQ_generate_template_spectrum.m	text/plain; charset=us-ascii	6.0 KB	2012-12-07 00:05	0
PDQ_inspect.m	text/plain; charset=us-ascii	5.6 KB	2012-12-07 00:05	0
PDQ_process_regions.m	text/plain; charset=us-ascii	6.2 KB	2012-12-07 00:05	0
PDQ_register.m	text/plain; charset=us-ascii	9.0 KB	2012-12-07 00:05	0
PDQ_rerun.m	text/plain; charset=us-ascii	2.5 KB	2012-12-07 00:05	0
PDQ_run_all.m	text/plain; charset=us-ascii	8.0 KB	2012-12-07 00:05	0
PDQ_visualize.m	text/plain; charset=us-ascii	23.6 KB	2012-12-07 00:05	0
PDQ_visualize_samples.m	text/plain; charset=us-ascii	12.9 KB	2012-12-07 00:05	0
PDQ_visualize_slice.m	text/plain; charset=us-ascii	3.6 KB	2012-12-07 00:05	0
PSM.m	text/plain; charset=us-ascii	6.1 KB	2012-12-07 00:05	4
README.txt	text/plain; charset=us-ascii	6.0 KB	2012-12-07 00:05	1
PDQ-6-11-2011.zip	application/zip; charset=binary	40.1 KB	2012-08-28 00:41	2
README.txt	text/plain; charset=us-ascii	0.6 KB	2012-08-27 20:45	1
PDQ-8-27-2012.zip	application/zip; charset=binary	3.4 MB	2012-08-27 20:32	2