Human health and medicine

Maftivimab

Maftivimab (REGN3479) is a fully human monoclonal antibody against Zaire ebolavirus glycoprotein GP2 fusion loop, a component of the Inmazeb cocktail (with atoltivimab and odesivimab), FDA-approved 2020 and WHO-prequalified 2023.

Magaldrate anhydrous

Magaldrate anhydrous (CAS 74978-16-8), also called aluminum magnesium hydroxide sulfate hydrate, is a synthetic non-absorbable antacid, formula Al5Mg10(OH)31(SO4)2·xH2O, brand Riopan, discontinued in the US market.

Magdi Yacoub

Sir Magdi Habib Yacoub (born 16 November 1935) is an Egyptian cardiothoracic surgeon who established heart transplantation in the UK, performed Europe's first heart-lung transplant in 1983 at Harefield, founded Chain of Hope and the Aswan Heart Centre, and received the Order of Merit in 2014.

MaGESII trial

MaGESII (NCT04736264), the Malay Glaucoma Eye Study II, is a Universiti Sains Malaysia trial testing navigation, exercise, and reading rehabilitation modules in 300 Malay adults with primary open angle or angle closure glaucoma.

MAGIC syndrome

MAGIC syndrome (mouth and genital ulcers with inflamed cartilage) is a rare autoinflammatory overlap of relapsing polychondritis and Behçet's disease, first named by Firestein et al. in 1985; its status as a distinct entity is debated.

Magnesium citrate

Magnesium citrate (trimagnesium dicitrate) is an osmotic saline laxative sold OTC for short-term occasional constipation and used in colonoscopy bowel prep; acts within 30 minutes to 6 hours, limited to one week, avoided in kidney disease.

Magnesium deficiency

Magnesium deficiency, or hypomagnesemia, is abnormally low blood magnesium. Causes include alcohol use, diarrhea, malabsorption, diabetes, and drugs such as PPIs, diuretics, and cisplatin; severe cases cause arrhythmias, seizures, and cardiac arrest.

Magnesium L-threonate

Magnesium L-threonate (Magtein) is a vitamin C metabolite magnesium salt marketed for brain health; EFSA and UK ACNFP assessed it safe as a novel food at up to 3,000 mg/day, delivering only ~145 mg elemental magnesium.

Magnet therapy

Magnet therapy, also called magnetic therapy or magnetotherapy, is an alternative medicine practice using static magnets (30–500 mT) or electromagnetic fields for pain. Controlled trials show no conclusive benefit for static magnets; PEMF has limited FDA-approved uses.

MAGNET trial

MAGNET trial (NCT06018272): German five-site cluster-randomized trial comparing 12 months of outpatient mentalization-based treatment with bona fide psychodynamic or cognitive-behavioral psychotherapy in 304 adults with borderline personality disorder; primary outcome is crisis events (self-harm, suicide attempts).

Magnet-controlled capsule endoscopy

Magnet-controlled capsule endoscopy, also called magnetically guided capsule endoscopy, is a diagnostic technique in which a swallowed video capsule is steered through the stomach by an external magnetic field, without sedation.

Magnetic compression anastomosis

Magnetic compression anastomosis is a sutureless technique in which paired magnets compress apposed ends of bowel, bile duct, or blood vessel until a channel heals open.

Oct 22, 2026

Magnetic drug targeting

Magnetic drug targeting (MDT) is a drug delivery strategy in which drugs bound to magnetic carriers, typically iron oxide nanoparticles, are concentrated at a disease site by an external magnetic field.

Magnetic hyperthermia

Magnetic hyperthermia is a cancer treatment that heats magnetic nanoparticles placed in a tumor with an alternating magnetic field, killing cancer cells at 40 to 45 degrees Celsius or higher.

Magnetic particle imaging

Magnetic particle imaging (MPI) is a radiation-free tomographic method that images iron oxide nanoparticle tracers in the body, reported by Gleich and Weizenecker in 2005.

Magnetic resonance angiography

Magnetic resonance angiography, or MR angiography, is a set of MRI techniques that visualize blood vessels and blood flow, often without injected contrast or ionizing radiation.

Magnetic resonance cholangiopancreatography

Magnetic resonance cholangiopancreatography (MRCP) is a noninvasive MRI technique, first described in 1991, that images the bile ducts, gallbladder, and pancreatic duct without radiation or contrast, serving as the noninvasive alternative to diagnostic ERCP.

Magnetic resonance elastography

Magnetic resonance elastography is an MRI technique that measures soft tissue stiffness by imaging shear waves, used mainly to detect and stage liver fibrosis and reduce the need for liver biopsy.

Magnetic resonance fingerprinting

Magnetic resonance fingerprinting is a quantitative MRI technique, introduced at Case Western Reserve University in Nature in 2013, that measures several tissue properties simultaneously from one scan.

Magnetic resonance imaging

Magnetic resonance imaging (MRI), also once called NMRI, is a medical imaging method using strong magnetic fields and radio waves, founded on Lauterbur's 1973 gradient-encoding work and Mansfield's fast imaging, honored by the 2003 Nobel Prize; it images soft tissue without ionizing radiation.

Magnetic resonance imaging of the brain

Brain MRI (head MRI) images the brain using a strong magnet, radio waves, and a computer without ionizing radiation. Field strengths of 1.5, 3, and 7 tesla; gadolinium contrast; used for stroke, tumors, and multiple sclerosis.

Magnetic Resonance Myelography

Magnetic resonance myelography (MRM) is a heavily T2-weighted MRI sequence showing CSF, the thecal sac, and nerve roots, used for spinal stenosis and CSF leak work-up, with or without intrathecal gadolinium.

Magnetic resonance neurography

Magnetic resonance neurography (MRN) is an MRI technique that images peripheral nerves directly, used to diagnose entrapment neuropathies, traumatic nerve injury, plexus disorders, and nerve sheath tumors.

Magnetic resonance spectroscopic imaging

Magnetic resonance spectroscopic imaging, also called chemical shift imaging, is an MRI technique that maps metabolites across the brain, used to characterize tumors and epileptic foci.

Magnetic resonance urography

Magnetic resonance urography (MRU) is an MRI technique that images the kidneys, ureters, and bladder without ionizing radiation, used to diagnose obstruction, congenital anomalies, and tumors.

Magnetization transfer imaging

Magnetization transfer imaging is an MRI technique, introduced by Wolff and Balaban in 1989, that measures macromolecular content such as myelin and is mainly applied to multiple sclerosis.

Magnetization transfer MRI

Magnetization transfer MRI is an MRI technique that uses off-resonance radiofrequency pulses to probe invisible macromolecular protons, providing one of the main measures of myelin content in vivo.

Magnetization-prepared rapid gradient echo MRI

Magnetization-prepared rapid gradient echo (MPRAGE, also written MP-RAGE) is a 3D MRI pulse sequence producing high-resolution T1-weighted brain volumes, widely used clinically since its 1990 introduction.

Oct 15, 2026

Magnetocardiography

Magnetocardiography (MCG) is a non-contact, non-invasive technique that measures the magnetic fields produced by the heart's electrical activity, first recorded in 1963 and used to detect myocardial ischemia and fetal arrhythmias.