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Maximum intensity projection

Dr Daniel J Bell ◉ and Dr Bruno Di Muzio ◈ et al.

Maximum Intensity Projection (MIP) consists of projecting the voxel with the highest attenuation value on every view throughout the volume onto a 2D image ¹.

Such an algorithm is rather simple: for each XY coordinate, only the pixel with the highest Hounsfield number along the Z-axis is represented so that in a single bidimensional image all dense structures in a given volume are observed. For example, it is possible to find all the hyperdense structures in a volume, independently of their position ².

This method tends to display bone and contrast material-filled structures preferentially, and other lower-attenuation structures are not well visualized ². The primary clinical application of MIP is to improve the detection of pulmonary nodules and assess their profusion. MIP also helps characterize the distribution of small nodules. In addition, MIP sections of variable thickness are excellent for assessing the size and location of vessels, including the pulmonary arteries and veins ¹.

History and etymology

The American radiologist, working in Stanford, California, Sandy Napel (fl. 2019) et al introduced sliding thin-slab maximum intensity projection (STS-MIP) as a new technique in 1993 ³.

References

Physics and imaging technology: CT

computed tomography (CT)
- CT technology
- dual energy CT
  - clinical applications of dual energy CT
    - virtual non-contrast imaging
    - abdominal
    - vascular
    - urinary system
    - musculoskeletal
- CT image reconstruction
- CT image quality
- CT dose
- CT contrast medium
  - iodinated contrast media
- coronary CT angiography
- CT artifacts
  - patient-based artifacts
    - motion artifact
    - transient interruption of contrast
  - physics-based artifacts
  - hardware-based artifacts
    - ring artifact
    - tube arcing
    - out of field artifact
    - air bubble artifact
    - helical and multichannel artifacts
- CT safety
- history of CT
  - Godfrey N Hounsfield

Article information

rID: 14801

System: Vascular, Chest

Section: Physics

Tag: cases, cases, refs, mip, ct image-processing methods, minip

Synonyms or Alternate Spellings:

Sliding thin-slab maximum intensity projection (STS-MIP)
MIP
Maximum intensity projection (MIP)

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Cases and figures

Case1: normal lungsCase1: normal lungs

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Case 2: pseudomembraneous colitisCase 2: pseudomembraneous colitis

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