This article contains a list of commonly used medical abbreviations and acronyms that start with the letter T and may be encountered in medicine and radiology (please keep the main list and any sublists in alphabetic order).

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• T

  • temperature

  • temporal (e.g. T-bone)

  • tera- (SI prefix for 10¹²)

  • tesla (SI unit of magnetic flux density)

  • thoracic

  • threonine (single letter amino acid code)

  • thymine (DNA nucleotide)

  • time

• T½: half-life time

• T1

  • first thoracic vertebra

  • spin-lattice time

  • TNM stage

• T1DM: type 1 diabetes mellitus

• T1RF: type 1 respiratory failure

• T1WI: T1 weighted imaging

• T2

  • second thoracic vertebra

  • spin-spin time

  • TNM stage

• T2DM: type 2 diabetes mellitus

• T2RF: type 2 respiratory failure

• T2WI: T2 weighted imaging

• T3

  • third thoracic vertebra

  • TNM stage

  • tri-iodothyronine (a.k.a. thyronine)

• T4

  • fourth thoracic vertebra

  • thyroxine

  • TNM stage

• T1-T12: thoracic vertebrae

• T13: trisomy 13

• T18: trisomy 18

• T21: trisomy 21

• TA

  • Takayasu arteritis

  • Terminologia Anatomica

  • transabdominal (ultrasound)

  • treatment authority

  • tunica albuginea

• T&A: tonsillectomy and adenoidectomy

• TAA: thoracic aortic aneurysm

• TAAD: type A aortic dissection

• TAAG: tibioastragalus anticus of Gruber muscle

• TAB: temporal artery biopsy

• TAC : trigeminal autonomic cephalgia

• TACE

  • transarterial chemoembolisation

  • transcatheter arterial chemoembolisation

• TACO: transfusion associated circulatory overload

• TACS

  • total anterior circulation stroke

  • transcranial alternating current stimulation

• TAD: type A dissection

• TAE: transarterial embolization

• TAFRO: thrombocytopenia, anasarca, fever, reticulin fibrosis and organomegaly syndrome

• TAH: total abdominal hysterectomy

• TAHBSO: total abdominal hysterectomy and bilateral salpingo-oophorectomy

• TAI

  • traumatic aortic injury

  • traumatic axonal injury

• TAK: Takayasu arteritis

• TAMIS: transanal minimal invasive surgery

• TAPS: traumatic abruptio placenta scale

• TAPVR: total anomalous pulmonary venous return

• TAR: thrombocytopenia with absent radius syndrome

• TAT: turnaround time

• TATT: tired all the time

• TAVI: transcatheter aortic valve implantation

• TAVR: transcatheter aortic valve replacement

• TB

  • terabyte

  • tuberculosis

• TBAD: type B aortic dissection

• TBI

  • toe-brachial index

  • total body irradiation

  • traumatic brain injury

• TBLBx: transbronchial lung biopsy

• TBNA: transbronchial needle aspiration

• TBSA: total body surface area (burns)

• TBW: tension band wire

• tBW: transmitter (radiofrequency) bandwidth

• TC

  • Tenckhoff catheter

  • transverse colon

• Tc: technetium

• TCA

  • transient cerebral arteriopathy

  • traumatic cardiac arrest

  • tricarboxylic acid

  • tricyclic antidepressant

• TCC: transitional cell carcinoma

• TD: trochlear depth

• TDC: thyroglossal duct cyst

• TDP-43: transactive response (TAR) deoxyribonucleic acid-binding protein 43 (kDa)

• TDR-TB: totally drug-resistant tuberculosis

• TDS: three times a day (drug prescriptions, L: ter die sumendum)

• T-Dxd: trastuzumab deruxtecan

• TE: time to echo or echo time

• TEA: total elbow arthroplasty

• TECAB: totally endoscopic coronary artery bypass

• TED

  • thromboembolic deterrent (TED) stockings

  • thromboembolic disease

  • thyroid eye disease

• TEE: transesophageal echocardiography

• TEETH: tried everything else, try homeopathy

• TEF: tracheo-esophageal fistula

• TEM: transmission electron microscopy

• TENS

  • toxic epidermal necrolysis syndrome

  • transcutaneous electrical nerve stimulation

  • titanium elastic nail system

• TER: total elbow replacement

• TESA: testicular sperm aspiration

• TET: tubal embryo transfer

• TEVAR: thoracic endovascular aortic repair

• TFC: triangular fibrocartilage

• TFCC: triangular fibrocartilage complex

• TFCS: tibiofibular clear space

• TFE: turbo field echo

• TFL: tensor fasciae latae

• TFO: tibiofibular overlap

• TFTs: thyroid function tests

• TG

  • thyroglobulin

  • triglyceride

• TGA

  • Therapeutic Goods Administration (Australian equivalent of the FDA)

  • transient global amnesia

  • transposition of the great arteries

• TGDC: thyroglossal duct cyst

• TGSE: turbo gradient spin echo

• TGV: transposition of the great vessels

• TH

  • teaching hospital

  • thyroid hormone

• Th: thorium

• THA: total hip arthroplasty

• THAD: transient hepatic attenuation differences

• THC: tetrahydrocannabinol (principle active component of marijuana)

• THID: transient hepatic intensity differences

• THR: total hip replacement

• Thr: threonine

• THRIVE: T1W high resolution isotropic volume examination (Philips)

• THz: terahertz

• TI

  • terminal ileum

  • thermal index

  • time to invert

• Ti: titanium

• TIA: transient ischemic attack

• Tib: tibia

• Tics: diverticula

• TID: transient ischemic dilatation

• TIFF: tagged image file format

• TIMI score: thrombolysis in myocardial infarction

• TIPC: tunneled indwelling pleural catheter

• TIPIC: transient perivascular inflammation of the carotid artery

• TIPS: transjugular intrahepatic portosystemic shunt

• TIPSS: transjugular intrahepatic portosystemic shunt

• TI-RADS: thyroid image reporting and data system

• TIRM: turbo inversion recovery magnitude

• TKA: total knee arthroplasty

• TKI: tyrosine kinase inhibitor

• TKR: total knee replacement

• TL

  • thoracolumbar

  • tubal ligation

• Tl: thallium

• TLA: three letter acronym

• TLC

  • tender loving care

  • total lung capacity

  • triple lumen catheter

• TLD: thermoluminescent dosimeter

• TLE: temporal lobe epilepsy

• TLH: total laparoscopic hysterectomy

• TLIF: transforaminal lumbar interbody fusion

• T-LOC: transient loss of consciousness

• TLSO: thoracolumbosacral orthosis

• TM

  • transverse magnetization

  • tympanic membrane

• Tm: thulium

• Tmax: time to maximum

• TMD: temporomandibular dysfunction

• TMJ

  • temporomandibular joint

  • trapeziometacarpal joint

• TMP-SMX: trimethoprim/sulfamethoxazole

• TMS: tumefactive multiple sclerosis

• TMTJ: tarsometatarsal joint

• TN: true negative

• Tn: troponin

• TNBC: triple negative breast cancer

• TNF: tumor necrosis factor

• TNL: tibionavicular ligament

• TNM: tumor-nodes-metastases

• T&O: trauma and orthopedics

• TOA: tubo-ovarian abscess

• TOC: trial of (urinary) catheter

• TOE: transesophageal echocardiography

• TOF

  • tetralogy of Fallot

  • time-of-flight

  • tracheo-esophageal fistula

• TOG: tracheo-esophageal groove

• TOLAC: trial of labor after cesarean section

• Tomo: tomogram

• TON: traumatic optic neuropathy

• TONE: tilt optimized non-saturated excitation

• TOP

  • tail of pancreas

  • tender on palpation

  • termination of pregnancy

• TORCH: toxoplasmosis, other (syphilis, varicella, parvovirus), rubella, CMV, herpes

• TORP: total ossicular replacement prosthesis

• TOS: thoracic outlet syndrome

• TOV: trial of void

• TP

  • transverse process

  • true positive

• tPA: tissue plasminogen activator

• TPC: tunneled pleural catheter

• TPN: total parenteral nutrition

• TPR: temperature, pulse and respiration

• TPS

  • thermoplastic splint

  • treatment planning system

• TPT

  • tibioperoneal trunk

  • transpyloric tube

• TR

  • time to repeat

  • tricuspid regurgitation

• T/R: transmit receive (coil)

• TRALI: transfusion-related acute lung injury

• TRANCE: triggered angiography non-contrast enhanced

• TRAQ: time-resolved acquisition (Hitachi)

• TRH: thyroid-releasing hormone

• TRICKS: time-resolved imaging of contrast kinetics (GE)

• Trig: triggered

• Triple-A syndrome: achalasia-addisonianism-alacrima syndrome

• TRO

  • to rule out

  • triple-rule-out

• Trop: troponin

• Trp: tryptophan

• TrueFISP: true fast imaging with steady state precession

• TRUFI: true fast imaging with steady state precession

• TRUS: transrectal ultrasound

• TS

  • transverse section

  • tricuspid stenosis

  • tuberous sclerosis

• TSA: total shoulder arthroplasty

• tSDH: traumatic subdural hemorrhage

• TSE: turbo spin echo

• TSETF: turbo spin echo turbo factor

• TSF: Taylor spatial frame

• TSH: thyroid-stimulating hormone

• TSHR Ab: thyroid stimulating hormone receptor antibodies

• TSR: total shoulder replacement

• TSS

  • toxic shock syndrome

  • transsphenoidal surgery

• TT-TG: tibial tuberosity - trochlear groove sulcus distance

• TTC: tibiotalocalcaneal arthrodesis

• TTE: transthoracic echocardigraphy

• TTFO: to take fluids orally

• TTN: transient tachypnea of the newborn

• TTP

  • thrombotic thrombocytopenic purpura

  • time to peak

• TTS

  • transdermal therapeutic system

  • thrombosis with thrombocytopenia syndrome

  • triple-tissue sampling

• ​TTTS: twin-to-twin transfusion syndrome

• TUBS: traumatic unilateral dislocation with a Bankart lesion requiring surgery

• TurboFLASH: turbo fast low angle shot

• TurboGRASS: turbo gradient recalled acquisition in steady-state

• TurboGSE: turbo gradient spin echo

• TurboIR: turbo inversion recovery

• TURBT: transurethral resection of bladder tumor

• TURP: transurethral resection of the prostate

• TV

  • tidal volume

  • transvaginal (ultrasound)

  • tricuspid valve

  • tunica vaginalis

• TVH: total vaginal hysterectomy

• TVR: tricuspid valve replacement

• TVT: tension-free vaginal tape

• TWB

  • total weight bearing

  • touch weight bearing

• TWI: T-wave inversion

• TWIST: time-resolved angiography with stochastic trajectories (Siemens)

• TWOC: trial without (urinary) catheter

• Tx

  • transplant

  • treatment

  • tumor cannot be assessed (TNM)

• TXA: tranexamic acid

• Tyr: tyrosine

• TZ: transition zone (prostate)