+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Hardware assessment using the multi-module, multi-resolution system (M3R): a signal-detection study

Hardware assessment using the multi-module, multi-resolution system (M3R): a signal-detection study

Medical Physics 34(7): 3034-3044

The multi-module, multi-resolution system (M3R) is used for hardware assessment in objective, task-based signal detection studies in projection data. A phantom capable of generating multiple realizations of a random textured background is introduced. Measured backgrounds from this phantom are used along with simulated lumpy and uniform backgrounds to investigate signal-to-noise ratio as a function of exposure time. Results are shown to agree with theoretical predictions, exhibiting a power-law like dependence previously seen for studies performed either in simulation or without an imaging system, and help validate the use of simulated lumpy backgrounds in observer studies. A second study looks at signal-detection performance, measured by AUC (area under the receiver operating characteristic curve), in lumpy backgrounds for 20 M3R aperture combinations as a function of lump size and signal size. Observer performance reveals an improvement in AUC for certain ranges of signal and lump combinations through the use of multiplexed, multiple-pinhole apertures, indicating a need for task-specific aperture optimization. The channelized Hotelling observer is used with Laguerre-Gauss channels for both observer studies. Methods for selection of number of channels and channel width are discussed.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 053478803

Download citation: RISBibTeXText

PMID: 17822011

DOI: 10.1118/1.2745920

Related references

The multi-module, multi-resolution system (M3R): a novel small-animal SPECT system. Medical Physics 34(3): 987-993, 2007

Signal acquisition module design for multi-channel surface magnetic resonance sounding system. Review of Scientific Instruments 86(11): 114702-114702, 2015

Detection of ECG Signal Based on Multi-resolution Sub-band Filter. Conference Proceedings 3: 2714-2717, 2007

Thermoeconomic assessment of a multi-engine, multi-heat-pump CCHP (combined cooling, heating and power generation) system A case study. Energy 35(9): 3540-3550, 2010

Stress wavelets: multi-scale and multi-resolution assessment of soil structure by the drop-shatter method. Soil and Tillage Research 88(1/2): 168-179, 2006

High-resolution wave number spectrum using multi-point measurements in space the Multi-point Signal Resonator (MSR) technique. Annales Geophysicae 29(2): 351-360, 2011

A unique iridium(III) complex-based chemosensor for multi-signal detection and multi-channel imaging of hypochlorous acid in liver injury. Biosensors & Bioelectronics 87(): 1005-1011, 2016

Embedding of large specimens in glycol methacrylate: prerequisites for multi-signal detection and high-resolution imaging. Microscopy Research and Technique 66(1): 25-30, 2005

3D-MB-MUSE: A robust 3D multi-slab, multi-band and multi-shot reconstruction approach for ultrahigh resolution diffusion MRI. Neuroimage 159: 46-56, 2017

Intra-Multi-Chip Module (MCM) Optical Clock Signal Distribution. Optics and Photonics News 5(12): 41-0, 1994

Assessment of environmental impacts of a barrage system using multi-temporal multi-sensor data. New strategies for European remote sensing Proceedings of the 24th Symposium of the European Association of Remote Sensing Laboratories, Dubrovnik, Croatia, 25-27 May 2004: 539-545, 2005

Multi-frequency EIT hardware system based on DSP. Conference Proceedings 6677-6680, 2007

Multi-objective and multi-parameter optimization of a thermoelectric generator module. Energy 71: 367-376, 2014

Detection and assessment of trees with Phellinus weirii (laminated root rot) using high resolution multi-spectral imagery. International Journal of Remote Sensing 25(4): 793-818, 2004

A multi-commuted flow injection system with a multi-channel propulsion unit placed before detection: Spectrophotometric determination of ammonium. Analytica Chimica Acta 600(1-2): 29-34, 2007