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Published on: May 19, 2023
Utility of MDCT MIP Postprocessing Reconstruction Images in Children With Hereditary Hemorrhagic Telangiectasia
Emilio J Inarejos Clemente1, Felix Ratjen, David E Manson
1From *The Department of Diagnostic Imaging, Hospital Sant Joan de Deu, University of Barcelona, Barcelona, Spain; †Chest Division, The Department of Pediatrics, The Hospital for Sick Children; ‡The Department of Diagnostic Imaging, The Hospital for Sick Children; and §The Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada.
Objective:
The aim of the study was to evaluate whether maximum intensity projection (MIP) images improve the detection and the delineation of the anatomic makeup of pulmonary nodules and/or arteriovenous malformations (pAVMs) in children with hereditary hemorrhagic telangiectasia (HHT).
Materials And Methods:
Two radiologists (D.M., E.I.C.) performed a blinded review of chest multidetector computed tomography scans in 39 children (age, 0-18 years) with proven HHT. Multiplanar 2.5 mm slices were blindly compared with multiplanar MIP for the presence of nodules and/or overt pAVMs and for the ability to identify vessels associated with the pAVMs. Parameters that were assessed included number of definitive nodules, number of definitive pAVMs, and the ability to detect the feeding artery or draining vein in both conventional and MIP images.
Results:
Our study showed similar detection rates between axial scans and MIP images for the detection of nodules (axial R1: 75 vs 62, P = 0.05; MIPS: 78 vs 86, P = 0.05) and in the determination of definite pAVMS (axials: 21 vs 29, P = 0.0007; MIPS: 27 vs 35, P = 0.01). Statistically significant differences were obtained in the ability to identify the feeding artery and draining vein between standard 2.5 mm slices and MIP images (axials: 13 vs 13, P = 0.0008; MIPS: 27 vs 23, P = 0.01). No other data parameters achieved statistically significance.
Conclusions:
Maximum intensity projection images in children with HHT can help identify the presence and the anatomy of pAVMs for future embolization.
Insights
Maximum intensity projection (MIP) images aid in detecting pulmonary nodules and arteriovenous malformations in children with hereditary hemorrhagic telangiectasia. MIPs improve visualization of pAVM anatomy for potential embolization treatment.
Area of Science:
- Radiology and Medical Imaging
- Pediatric Imaging
- Vascular Malformations
Background:
- Hereditary hemorrhagic telangiectasia (HHT) is a genetic disorder causing abnormal blood vessel formation.
- Pulmonary arteriovenous malformations (pAVMs) are a common and potentially serious complication of HHT in children.
- Accurate detection and characterization of pAVMs are crucial for management.
Purpose of the Study:
- To evaluate the effectiveness of maximum intensity projection (MIP) images compared to conventional multiplanar slices.
- To assess if MIP images improve the detection and anatomical delineation of pulmonary nodules and pAVMs in pediatric HHT patients.
- To determine the utility of MIPs in identifying feeding arteries and draining veins of pAVMs.
Main Methods:
- Blinded review of chest multidetector computed tomography (MDCT) scans from 39 pediatric HHT patients.
- Comparison of multiplanar 2.5 mm slices with multiplanar MIP images.
- Assessment of nodule and pAVM detection rates, and identification of associated vessels.
Main Results:
- Similar detection rates for nodules and definite pAVMs between conventional slices and MIP images.
- Statistically significant improvement in identifying the feeding artery and draining vein of pAVMs using MIP images.
- No other assessed parameters showed statistically significant differences.
Conclusions:
- Maximum intensity projection (MIP) imaging enhances the identification of pulmonary arteriovenous malformations (pAVMs) in children with HHT.
- MIP images provide valuable anatomical detail of pAVMs, aiding in treatment planning, such as embolization.
- MIPs are a useful adjunct to conventional CT for evaluating pediatric HHT patients.
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