Minimum intensity projection
In scientific visualization, minimum intensity projection (MinIP) is a method for visualization of structures with low intensity in a specific volume.[1][2] A two-dimensional image of a selected volume (for example all images that make up a 10 mm slab) is generated where each pixel is represented by displaying the lowest attenuation value in each voxel.
![](../I/m/Coronal_minimum_intensity_projection_CT_thorax.gif)
Example of a coronal MPR (slice thickness 10 mm) with minimal intensity projection. Air filled structures (especially bronchi) are enhanced.
![](../I/m/Minimum_intensity_projection.gif)
Schematic illustration of minimal intensity projection.
MinIP is mainly used to diagnose lung diseases with computed tomography scans where the attenuation values are reduced (for example traction bronchectasis and emphysema).[3] Another application is for assessing the bile tree and pancreatic duct which compared to the surrounding tissue is hypoattenuating (especially after intravenous contrast media administration).[4]
See also
References
- Dalrymple, Neal C.; Prasad, Srinivasa R.; Freckleton, Michael W.; Chintapalli, Kedar N. (September 2005). "Introduction to the Language of Three-dimensional Imaging with Multidetector CT". RadioGraphics. 25 (5): 1409–28. doi:10.1148/rg.255055044. PMID 16160120.
- Hayabuchi, Yasunobu; Inoue, Miki; Watanabe, Noriko; Sakata, Miho; Nabo, Manal Mohamed Helmy; Kagami, Shoji (June 2011). "Minimum-intensity projection of multidetector-row computed tomography for assessment of pulmonary hypertension in children with congenital heart disease". International Journal of Cardiology. 149 (2): 192–198. doi:10.1016/j.ijcard.2010.01.008. PMID 20144487.
- Ghonge, Nitin P; Chowdhury, Veena (2018). "Minimum-intensity projection images in high-resolution computed tomography lung: Technology update". Lung India. 35 (5): 439–440. doi:10.4103/lungindia.lungindia_489_17. PMC 6120307. PMID 30168468.
- Rao, Narayana D. L. V.; Gulati, Manpreet Singh; Paul, Shashi Bala; Pande, Girish Kumar; Sahni, Peush; Chattopadhyay, Tushar Kanti (February 2005). "Three-dimensional helical computed tomography cholangiography with minimum intensity projection in gallbladder carcinoma patients with obstructive jaundice: comparison with magnetic resonance cholangiography and percutaneous transhepatic cholangiography". Journal of Gastroenterology and Hepatology. 20 (2): 304–8. doi:10.1111/j.1440-1746.2004.03548.x. PMID 15683436.
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